/* ==========================================================================
   Le Ch'tit Appart — Cornimont (Hautes-Vosges)
   style.css — Feuille de style principale
   Design system : variables, base, typographie, composants, layout
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. VARIABLES (Design tokens — voir documentation/charte-graphique.pdf)
   -------------------------------------------------------------------------- */
:root {
  /* Couleurs primaires (issues du logo) */
  --color-primary: #1957A7;
  --color-primary-dark: #123F7D;
  --color-primary-light: #4A8FC7;
  --color-sky: #7BBADB;
  --color-ice: #C7DEED;
  --color-slate: #5B7997;

  /* Couleurs nature complémentaires */
  --color-wood: #7A5C3E;
  --color-wood-dark: #55402C;
  --color-pine: #35533F;
  --color-stone: #84929A;

  /* Neutres */
  --color-snow: #FFFFFF;
  --color-mist: #F7FAFC;
  --color-charcoal: #1F2A33;

  /* Feedback */
  --color-success: #2F855A;
  --color-warning: #B7791F;
  --color-danger: #C53030;

  /* Texte */
  --text-primary: var(--color-charcoal);
  --text-secondary: var(--color-slate);
  --text-on-dark: #FFFFFF;

  /* Typographie */
  --font-heading: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --fs-h1: clamp(2rem, 1.6rem + 1.8vw, 3rem);
  --fs-h2: clamp(1.625rem, 1.4rem + 1vw, 2.25rem);
  --fs-h3: clamp(1.25rem, 1.1rem + 0.6vw, 1.5rem);
  --fs-h4: clamp(1.125rem, 1rem + 0.3vw, 1.25rem);
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --fs-lead: 1.125rem;

  /* Espacements (échelle 4px) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;

  /* Rayons */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 999px;

  /* Ombres */
  --shadow-sm: 0 1px 2px rgba(31, 42, 51, 0.06);
  --shadow-md: 0 4px 12px rgba(31, 42, 51, 0.10);
  --shadow-lg: 0 12px 32px rgba(31, 42, 51, 0.14);

  /* Transitions */
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 150ms;
  --duration-medium: 300ms;
  --duration-slow: 600ms;

  /* Layout */
  --container-max: 1200px;
  --header-height: 76px;
}

/* --------------------------------------------------------------------------
   2. RESET / BASE
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--color-mist);
  -webkit-font-smoothing: antialiased;
}

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
a { color: var(--color-primary); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--color-primary-dark); }
a.link-plain { text-decoration: none; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-primary-dark);
  margin: 0 0 var(--space-4);
  font-weight: 700;
}
h1 { font-size: var(--fs-h1); line-height: 1.15; }
h2 { font-size: var(--fs-h2); line-height: 1.2; }
h3 { font-size: var(--fs-h3); line-height: 1.3; font-weight: 600; }
h4 { font-size: var(--fs-h4); line-height: 1.4; font-weight: 600; }

p { margin: 0 0 var(--space-4); }
p.lead { font-size: var(--fs-lead); color: var(--text-secondary); }

ul, ol { padding-left: 1.25em; margin: 0 0 var(--space-4); }
li { margin-bottom: var(--space-2); }

table { border-collapse: collapse; width: 100%; margin: 0 0 var(--space-5); }
th, td { text-align: left; padding: var(--space-3) var(--space-4); border-bottom: 1px solid var(--color-ice); }
th { font-family: var(--font-heading); color: var(--color-primary-dark); background: var(--color-ice); }

/* Focus visible accessible (WCAG AA) */
:focus-visible {
  outline: 3px solid var(--color-sky);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-3) var(--space-5);
  z-index: 1000;
  border-radius: 0 0 var(--radius-md) 0;
}
.skip-link:focus { left: 0; }

/* --------------------------------------------------------------------------
   3. LAYOUT
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.section { padding-block: var(--space-9); }
.section--tight { padding-block: var(--space-7); }
.section--ice { background: var(--color-ice); }
.section--charcoal { background: var(--color-charcoal); color: #fff; }
.section--charcoal h2, .section--charcoal h3 { color: #fff; }

.grid { display: grid; gap: var(--space-6); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.stack { display: flex; flex-direction: column; }
.cluster { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-4); }

.text-center { text-align: center; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* --------------------------------------------------------------------------
   4. HEADER / NAVIGATION
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-ice);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-5);
}
.brand { display: flex; align-items: center; gap: var(--space-3); text-decoration: none; }
.brand__logo { width: 48px; height: 48px; border-radius: var(--radius-full); }
.brand__name { font-family: var(--font-heading); font-weight: 700; color: var(--color-primary-dark); font-size: 1.1rem; line-height: 1.1; }
.brand__place { display: block; font-family: var(--font-body); font-weight: 400; font-size: 0.75rem; color: var(--text-secondary); }

.nav { display: flex; align-items: center; gap: var(--space-6); }
.nav__list { display: flex; gap: var(--space-5); list-style: none; padding: 0; margin: 0; }
.nav__list a { color: var(--text-primary); text-decoration: none; font-weight: 500; font-size: 0.95rem; }
.nav__list a:hover, .nav__list a[aria-current="page"] { color: var(--color-primary); }
.nav__toggle { display: none; }

/* --------------------------------------------------------------------------
   5. BOUTONS
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: 0 var(--space-5);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-standard),
              background-color var(--duration-fast) var(--ease-standard),
              box-shadow var(--duration-fast) var(--ease-standard);
}
.btn:hover { transform: translateY(-2px); }
.btn--primary { background: var(--color-primary); color: #fff; box-shadow: var(--shadow-sm); }
.btn--primary:hover { background: var(--color-primary-dark); color: #fff; box-shadow: var(--shadow-md); }
.btn--wood { background: var(--color-wood); color: #fff; }
.btn--wood:hover { background: var(--color-wood-dark); color: #fff; }
.btn--outline { background: transparent; border-color: var(--color-primary); color: var(--color-primary); }
.btn--outline:hover { background: var(--color-ice); color: var(--color-primary-dark); }
.btn--lg { min-height: 52px; padding: 0 var(--space-7); font-size: 1.05rem; }
.btn--block { width: 100%; }

/* --------------------------------------------------------------------------
   6. CARTES
   -------------------------------------------------------------------------- */
.card {
  background: #fff;
  border: 1px solid var(--color-ice);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-5);
  transition: transform var(--duration-medium) var(--ease-standard), box-shadow var(--duration-medium) var(--ease-standard);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card__icon {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-ice); color: var(--color-primary);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
}
.card--flat { box-shadow: none; }

.badge {
  display: inline-flex; align-items: center; gap: var(--space-1);
  background: var(--color-pine); color: #fff;
  font-size: var(--fs-small); font-weight: 600;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}
.badge--ice { background: var(--color-ice); color: var(--color-primary-dark); }

/* --------------------------------------------------------------------------
   7. HERO
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: flex-end;
  color: #fff;
  overflow: hidden;
}
.hero__media { position: absolute; inset: 0; z-index: 0; }
.hero__media img { width: 100%; height: 100%; object-fit: cover; }
.hero__scrim {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(18,63,125,0.25) 0%, rgba(18,63,125,0.15) 40%, rgba(18,32,45,0.85) 100%);
  z-index: 1;
}
.hero__content { position: relative; z-index: 2; padding: var(--space-8) var(--space-5) var(--space-9); max-width: var(--container-max); margin-inline: auto; width: 100%; }
.hero h1, .hero p { color: #fff; }
.hero__badges { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-bottom: var(--space-5); }
.hero__cta { display: flex; flex-wrap: wrap; gap: var(--space-4); margin-top: var(--space-5); }

/* --------------------------------------------------------------------------
   8. GALERIE / LIGHTBOX
   -------------------------------------------------------------------------- */
.gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
}
.gallery__item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  cursor: zoom-in;
  background: var(--color-ice);
}
.gallery__item img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--duration-medium) var(--ease-standard); }
.gallery__item:hover img { transform: scale(1.06); }
.gallery__item--wide { grid-column: span 2; grid-row: span 2; }

.lightbox {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(18, 26, 33, 0.92);
  display: none;
  align-items: center; justify-content: center;
  padding: var(--space-5);
}
.lightbox.is-open { display: flex; }
.lightbox__figure { max-width: min(1100px, 92vw); max-height: 85vh; }
.lightbox__figure img { max-height: 85vh; width: auto; margin-inline: auto; border-radius: var(--radius-md); }
.lightbox__caption { color: #fff; text-align: center; margin-top: var(--space-3); font-size: var(--fs-small); }
.lightbox__close, .lightbox__prev, .lightbox__next {
  position: absolute; background: rgba(255,255,255,0.12); color: #fff; border: none;
  width: 48px; height: 48px; border-radius: var(--radius-full); cursor: pointer;
  display: flex; align-items: center; justify-content: center; font-size: 1.5rem;
}
.lightbox__close { top: var(--space-5); right: var(--space-5); }
.lightbox__prev { left: var(--space-5); top: 50%; transform: translateY(-50%); }
.lightbox__next { right: var(--space-5); top: 50%; transform: translateY(-50%); }
.lightbox__close:hover, .lightbox__prev:hover, .lightbox__next:hover { background: var(--color-primary); }

/* --------------------------------------------------------------------------
   9. FICHE ÉQUIPEMENTS / LISTES À PUCES ICONIQUES
   -------------------------------------------------------------------------- */
.amenity-list { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-3); }
.amenity-list li { display: flex; align-items: center; gap: var(--space-3); margin: 0; }
.amenity-list svg { flex-shrink: 0; color: var(--color-primary); }

/* --------------------------------------------------------------------------
   10. AVIS CLIENTS
   -------------------------------------------------------------------------- */
.review-card { background: #fff; border-radius: var(--radius-lg); padding: var(--space-5); box-shadow: var(--shadow-sm); border-left: 4px solid var(--color-sky); }
.review-card__rating { color: var(--color-wood); font-weight: 700; margin-bottom: var(--space-2); }
.review-card__meta { font-size: var(--fs-small); color: var(--text-secondary); margin-top: var(--space-3); }

/* --------------------------------------------------------------------------
   11. FAQ (accordéon)
   -------------------------------------------------------------------------- */
.faq-item { border-bottom: 1px solid var(--color-ice); }
.faq-item summary {
  cursor: pointer; list-style: none; font-family: var(--font-heading); font-weight: 600;
  padding: var(--space-4) 0; display: flex; justify-content: space-between; align-items: center;
  color: var(--color-primary-dark);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 1.5rem; color: var(--color-primary); transition: transform var(--duration-fast) var(--ease-standard); }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { padding-bottom: var(--space-4); color: var(--text-secondary); }

/* --------------------------------------------------------------------------
   12. BREADCRUMB
   -------------------------------------------------------------------------- */
.breadcrumb { list-style: none; display: flex; flex-wrap: wrap; gap: var(--space-2); padding: var(--space-4) 0; font-size: var(--fs-small); color: var(--text-secondary); }
.breadcrumb li:not(:last-child)::after { content: "/"; margin-left: var(--space-2); color: var(--color-stone); }
.breadcrumb a { text-decoration: none; }

/* --------------------------------------------------------------------------
   13. FOOTER
   -------------------------------------------------------------------------- */
.site-footer { background: var(--color-charcoal); color: #fff; padding-block: var(--space-8); }
.site-footer a { color: var(--color-ice); }
.site-footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--space-6); }
.footer-grid h4 { color: #fff; font-size: 1rem; }
.footer-grid ul { list-style: none; padding: 0; }
.footer-grid li { margin-bottom: var(--space-2); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.15); margin-top: var(--space-7); padding-top: var(--space-5); display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--space-3); font-size: var(--fs-small); color: var(--color-stone); }

/* --------------------------------------------------------------------------
   14. UTILITAIRES LAZYLOAD
   -------------------------------------------------------------------------- */
img[loading="lazy"] { background: var(--color-ice); }
.js-lazy { opacity: 0; transition: opacity var(--duration-medium) var(--ease-standard); }
.js-lazy.is-loaded { opacity: 1; }